In “Skullduggery!” you’ll play a Semi-Organic Autonomous Skull employed as a collection agent for the IRS. Using the elasticity of your own brain, flick yourself around the fortresses of the afterlife’s biggest deadbeats. “Skullduggery!” features the endearingly grotesque art stylings of game artist extraordinaire Bill Mudron, inspired by the Max Fleischer animations of the 1930’s, and a quirky, doom-jazzy, bureau-noir soundtrack from industrial musician Michael Arthur Holloway.